flash.c 1.8 KB

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  1. /*
  2. * (C) Copyright 2000-2004
  3. * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
  4. *
  5. * See file CREDITS for list of people who contributed to this
  6. * project.
  7. *
  8. * This program is free software; you can redistribute it and/or
  9. * modify it under the terms of the GNU General Public License as
  10. * published by the Free Software Foundation; either version 2 of
  11. * the License, or (at your option) any later version.
  12. *
  13. * This program is distributed in the hope that it will be useful,
  14. * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15. * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  16. * GNU General Public License for more details.
  17. *
  18. * You should have received a copy of the GNU General Public License
  19. * along with this program; if not, write to the Free Software
  20. * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  21. * MA 02111-1307 USA
  22. */
  23. #include <common.h>
  24. #include <nios.h>
  25. /*
  26. * include common flash code (for altera boards)
  27. */
  28. #include "../common/flash.c"
  29. /*---------------------------------------------------------------------*/
  30. #define BANKSZ (8 * 1024 * 1024)
  31. #define SECTSZ (64 * 1024)
  32. #define USERFLASH (2 * 1024 * 1024) /* bottom 2 MB for user */
  33. /*---------------------------------------------------------------------*/
  34. unsigned long flash_init (void)
  35. {
  36. int i;
  37. unsigned long addr;
  38. flash_info_t *fli = &flash_info[0];
  39. fli->size = BANKSZ;
  40. fli->sector_count = CONFIG_SYS_MAX_FLASH_SECT;
  41. fli->flash_id = FLASH_MAN_AMD + FLASH_AMDLV065D;
  42. addr = CONFIG_SYS_FLASH_BASE;
  43. for (i = 0; i < fli->sector_count; ++i) {
  44. fli->start[i] = addr;
  45. addr += SECTSZ;
  46. /* Protect all but 2 MByte user area */
  47. if (addr < (CONFIG_SYS_FLASH_BASE + USERFLASH))
  48. fli->protect[i] = 0;
  49. else
  50. fli->protect[i] = 1;
  51. }
  52. return (BANKSZ);
  53. }